摘要
砂田在干旱半干旱地区是传统保水保墒的耕作方式,至今已有300多年的历史。对传统的砂田配合现代集雨滴灌技术种植西瓜,供试品种是西农8号,试验处理为集雨滴灌砂田(DSF),传统砂田(CSF),不覆砂的传统土田(CEF)。通过甘肃景泰十里砂河村的田间试验表明,产量比传统砂田提高近3倍。产量提高最主要的因素是在西瓜水分受到胁迫的几个关键需水期,及时实施了集雨补灌技术。从田间水分变化分析了集雨补灌砂田的增产机理。
This paper discussed the effect of supplemental irrigation with harvesting rainwater on the yield of watermelon planted in sand field and soil moisture in the semiarid region of northwestern China where sand field is a traditional farming system and has been practiced more than 300 years. The purpose of this study was to increase the yield of watermelon by using rainwater harvested in the sand field area where watermelon production relies fully on rainfall. The tested cultivar was Xinong No. 8. The experimental treatments were divided into three types: (1) Rainwater harvesting drip irrigation sand field (DSF); (2) Conventional sand field (CSF) without drip irrigation; (3) Conventional soil field (CEF). The experimental results at Jintai Station showed that the yield of watermelon in the DSF treatments were approximately three times as high as that in the CSF, because the collecting rain water was applied at the critical growth stages. Meanwhile, there was a significant difference in soil moisture among three experimental treatments in every stage of watermelon growth.
出处
《中国沙漠》
CSCD
北大核心
2003年第4期459-463,共5页
Journal of Desert Research
基金
国家"十五"科技攻关课题(2001BA509B15)资助
关键词
砂田
集雨补灌
西瓜
产量
土壤水分
干旱半干旱地区
种植技术
arid and semiarid region
rainwater harvesting
drip irrigation
sand field
watermelon
soil moisture
yield
